standard_init_linux.go:211: exec user process caused "exec format error"

[talondnb]

image: jc21/nginx-proxy-manager:latest

Describe the bug
npm app doesn't boot, with the logs showing:
standard_init_linux.go:211: exec user process caused "exec format error"

To Reproduce
docker-compose.yaml (previously worked fine until recent update)

version: "3.5"

volumes:
  data:
    driver: local
    driver_opts:
      type: nfs4
      o: addr=10.10.10.100,rw,noatime,rsize=8192,wsize=8192,tcp,timeo=14
      device: ":/volume1/Config/npm/data"
  letsencrypt:
    driver: local
    driver_opts:
      type: nfs4
      o: addr=10.10.10.100,rw,noatime,rsize=8192,wsize=8192,tcp,timeo=14
      device: ":/volume1/Config/npm/letsencrypt"

services:
  app:
    image: jc21/nginx-proxy-manager:latest
    restart: always
    ports:
      - "80:80"
      - "443:443"
      - "81:81"
    volumes:
      # Make sure this config.json file exists
      - /mnt/config/npm/config.json:/app/config/production.json
      - data:/data
      - letsencrypt:/etc/letsencrypt
    depends_on:
      - db
  db:
    image: yobasystems/alpine-mariadb:latest
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: "npm"
      MYSQL_DATABASE: "npm"
      MYSQL_USER: "npm"
      MYSQL_PASSWORD: "password"
    volumes:
      # Does not work on an NFS volume
      - /home/xxx/npm/data/mysql:/var/lib/mysql

Expected behavior
npm app boots normally

Operating System
Hypriot docker image on Pi4

[talondnb]

This seems to be because of the latest multi arch build, perhaps not using the right one for my Pi 4.

[jc21]

I don’t have a pi 4 yet, but I’ll take a look at it tomorrow

[talondnb]

Thanks. Pi 4 will be an arm7 build. Can I manually specify somehow?

[talondnb]

I've tried latest-arm7l as per tags here:

https://hub.docker.com/r/jc21/nginx-proxy-manager

This doesn't seem to work, no valid dockerfile.

[jc21]

Could you run ‘uname -a’ in you terminal and paste the output. Should tell me the arch and whether it’s 32 or 64 bit

[talondnb]

Linux gliesedocker 4.19.66-v7l+ #1253 SMP Thu Aug 15 12:02:08 BST 2019 armv7l GNU/Linux

[talondnb]

I suspect you've fixed something as i've just retried the :latest-armv7l tag and it's now working. :)

[jc21]

I thought pi4 was armv8/arm64. A quick look at Hypriot doesn’t seem to offer different versions for Pi 2/3/4

[jc21]

By the way, that latest-armv7l tag is not version NPM 2.1.0, its the previous docker manifest version

[talondnb]

Ahh I see. I’ll await updates before trying the latest tag again. 👍🏼

[jc21]

Looks like the docker buildx isn't building for the correct architectures. Still looking in to it.

[jc21]

Nope buildx was working as expected. The real problem is s6-overlay, I've mistakenly been using amd64 binaries for it across all architectures. Rookie move.

[talondnb]

Ah appreciate it, thanks for looking into this promptly.